Woolworth Building, boiler room from N.W. corner.

Woolworth Building, engine room from N.W. corner.

Woolworth Building, boiler room looking N.W.

Woolworth Building, exterior from N.W. corner.

Woolworth Building, boiler room from S.W. corner.

Woolworth Building, rear from N.W. corner.

Woolworth Building, shoring N.W. corner.

Woolworth Building, boiler room from N.E. corner.

Woolworth Building, engine room looking N.W.

Woolworth Building, exterior from N.W.

Woolworth Building, sub-cellar N.W. corner.

Woolworth Building. Boiler room.

Woolworth Building, boiler room.

Woolworth Building, boiler room.

Woolworth Building, from S.E. corner looking N.W.

Woolworth Building, [from] Barclay looking N.W.

Woolworth Building, basement from N.W. corner looking east to Park Place.

Woolworth Building, sub-basement engine room from S.E. looking N.W.

Woolworth Building, boiler room behind east boilers.

Woolworth Building, engine room from S.W. corner.